Blank forming press feed



4 Sheets-Sheet l May 19, 1953 ,1. R. BAUMGARTNER BLANK FORMING PRESSFEED Filed July 12, 195o J. R. BAUMGARTNER BLANK FORMING PRESS FEED May19, 1953 4 Sheets-Sheet 2 Filed July 12. 195o 'I'l'l'lmnllllhllln mw, \Ihilhllull/ nl sa wwwa@ @zFza May 19, 1953 J. R. BAUMGARTNER v 2,638,821

BLANK FORMING PRESS FEED Filed July l2, 1950 4 Sheets-Sheet 4 PatentedMay 19, M1953 UNITED)` STATES PATENT OFFICE y V 2,638,821 lBLANK'FORMING PRESS raso John Baumgartner, Milwaukee, Apblicationiulyiz,195o, serial No. 173,409`

, Claims. 1

The invention relates to box` or'carton blank forming machines.

The general object 'of the invention isvto p rovide a machine of thecharacter described in which a` web of paperis intermittently fed intoand out of`a creasing and cutting or blank formingpress from a pair ofintermittently active feed rolls to which the paper is `supplied bycontinuously active metering lfeed rolls, with means for creating adefinitely controlled loop in the paper web between said sets of rollsduring the cutting operation of the press. f

A further object of the invention is to provide certain improvementsover the structure shown and `described in my lcopending applicationSerial No; 121,725, filed October 17, (1949, for Carton Blank FormingMachines, among which are an improved means for controlling'theformation of the loop in the paper, an improved brake means toarrest the travelpf the web during ,the cutting operation, and improvedmeans for control# ling the operation of the intermittently `active feedrolls at definite predeterminedl intervals even though the thickness ofthe web varies.

A further object of the invention is to provide a press which maybereadily connected to a print-v ing press forcontinuously printing theweb before its passage'to the blanking press. 1

The invention further consists in `the `several features hereinafter setforth and more `par-y ticularly dened by claims at the conclusion`hereof. 1

In the drawings:

Fig. 1 is a side elevation view of apparatus ems bodying the invention;

Fig. 2 is a plan View of the apparatus, parts being broken away; i,

Fig. 3 is a detailed vertical sectional View taken ontheline 3,-3of.Fig.1;

Fig. 4 is a detailed vertical :sectional view takenontheline4-4ofFig.'1`; o

Fig. 5 is a detailed vertical sectional view taken on theline l5---5Aof,` Fig. l,`parts being-broken' away;

on the line 6 6 of Fig. 6; .l

Fig. is a detailed -vertical sectional View through a part of the.mechanism controlling the intermittently operated feed rolls;

Fig. 9 is a detailed vertical sectiona.1 `viewtaken` on the line 9-9'ofFig.' 2. i I

Referring to the drawings, thenumeral I0,`

designates a `base:` frame, structure on `which housings II and I2 andspaced uprights I3 are Fig. 6 is a'detailedvertical sectional viewtaken;

, f 2 mounted. The press itself includes a xed platen I4 carried by theuprightsfIS and a movable platen I5 slidably` mounted on` said uprights.One ofthe platens I4 or I5 carries the cutting and creasing dies whilethe other carries a base plate, `these parts being indicatedbythehumeralsIB'and Il.' `Brackets I8 mounted at one side of'the platenfacilitate introduction. and `re` moval of the parts IE and IT. llReferring to Figs 1, 2 and 3, thev movable platen I5 is reciprocated bytwov sets of eccentrically driven) connecting rods I9, there being tworods in each set; journalled at their upper en ds on shafts 20 carriedby the platen and mounted at their lower ends on eccentrics 2I mountedin spacedrelation onspacedshaftsfZZ which are drivingly connectedtogether by one to one gears 23 and 24. `The left hand shaft 22, or maindrive shaft of the machine, carries a pulley 25 connected by belts 26with a pulley 21 on the shaft of an electric drive motor 28 mountedinthe base of the machine.

Referring to Figs.v1 and 2, at theentrance end of the" machine, the web"W ofcarton stock is led overa convexly curved plate or bed 29 whichactsto stiifennthe web so that it may be efficiently guided betweenthelaterally adjustable guide members' 30^ Whichare suitably mounted formovement toward or away from each other on a `screw shaft 3| journalledin the sides of the frame and carrying an operating crank 32. l`After'being properly` laterally alined, the web is "threaded through aset of three rolls!I 33, 34, and 35 which are continuously drivenmetering l rolls and then passes through loop` forming` mechanism,pastbraking mechanism to the in# termittently activefeed rolls 36'and 31by which it is fedin between the platens 'off the press. Re` ferring` toFigs. 2, 4 and8, the roll 33 is continu'- ouslydrven from the shaft 38for the roll 36, but at half the speed of theroll, through a gear drive`I connection Y'therewith comprising a bevel gear 33 on said shaftmeshing Withi a similar gear cna torque tube shaft 40 which at its otherend carries a-bevel `gear '4I meshing with a larger` gear42 on the shaft`43 of the roll 33 which also carries a gear 44 meshing with a -gear 45on the shaft 46 of the roller 34, which gear 45 `also. meshes with agear4'1` on the shaft 43 of the roller35.

The shaft 46 ofY the roller 34 is jowrnalled in spaced arms 49 mountedfor swinging move- 1nen tat,;50 onA the frame ofwthei machine andlimited in its. upper ,swing` bythe roller; 34 and V ingits, lower`swing by` engagement with a stop pin 5I xed in each side of the frame.To allow free swinging movement of the roller 34, its weight iscounterweighted by a spring 52 in a bore 53 in each arm, as shown inFig. 9, interposed between an adjustable threaded plug 54 and a plungeror pin 55 adapted to engage the stop pin I.

The shaft 48 of the roller 35 is mounted in the outer ends of arms 56carried by an oscillatory shaft 5,1 journalled in the frame and carryinga crank arm 58j? which isv operated upon by a spring' loaded' plunger59` similar in all respects to the plunger 59a, shown in Fig. 6,`

urged outwardly by a spring 60 mounted in a casing El having a springloading screw 6% adyjustably mounted in the threaded bore of saidcasing. As spring loaded plunger 5F- aetsf through the crank 58, shaft.51,. and arms 58 to swing the roller 35 upwardly, toward the roller 34,this roller 34 in turn will be swung upwardlyi toward the roller 33. Thenip or grip of the web. between. these three rolls is adjusted by thepressure or tension placed: ontheloading spring ofplunafer58by-itsfadjusting screw..

To prevent a broken web from rolling up onv roll 35, a deflector--plate63, isv mounted beneath the roll 34 and forv a similar purpose a deectorplate .54, not" shown inV Fis. 2; but shown in Fig. 1f, guides; thgeweb`away'v from therolls 34 and 35 after it leaves; the nip'V between therolls 34 and-i 33.

For threading the web; through the; rolls- 33, 34 andi 35- anair-operated piston 65 acts on the arm or crank 58 oppositiontothespring act-l ing on the plunger 59ntoswing the shaft` 5,1.l and arms 5Brcountercloelrwisje asviewed-4 in 1 to move the roll` 3.5. downwardlyaway from the roll 3.4' which; isi then; free; tof` move Cl'Qwllhwardlyi-rorn the roll 33 soi that theserollsI are opened up. The. piston65 islsimilar-to the. pisf` ton 65a, `shown in Zielig.` 6,.` whichy is*-ope'rated by compressed air from any suitable source and returned by aspringclif.'

For controlling the Vforrniatiorr of the: loop L in the. web betweenthe; set ofq'feedrolle. 3f3r and 34 and the set of rolls 3B and 31,upperfapron 61 and' a lower apron; 68j aref provided: Fig; l: showsthepreferred form of-y these.-` anrons; The apron 81, secured toV the!4sides; of'. the; housing; isk curved orV inclines downwardly from. therolls 33' 'and' 34' as indicateds atA 59?. and; thenatf Ht extendsupwardly to a position adjacent. the'. brake mechanism hereinafterdescribed.. This apron checks lthe upward, swing or: snapV oiithe webvwhen it 'is drawn up from the; loopedy on dottedl line position. shownin its positionr abut-f ting the underside off saidv apron anctV also..acts: to produce a` drag. due tof' t'rioti'onal'` contactv o1i the paperwith it asl the* webI is: fed*` through' the press, which prevents therolls" 362 and', 3ft overpowering the'r'olls 34E ands35. The. apron;6.8; mountedi between;l the sides oft the press; extends upwardly Afromthe frame; structure at a point 1I about midway of the loop and: ai?.its` upper end. 12 extends under'y the exit vend oi? the apronr 3.1'and'. slightlyv beyondz said: endf andi cooperatesv therewith?. to form:a relativelyf narrow throat: through:l which thef web.` passes; Theyapron 68 checks the downward snapf offthe web. The deiiector' S4' actsasf a guidef fron the: web which on leaving the rolls 33 andi 3.4?. isfvfed;v downwardly toward the frame I-ff as' is: apparent from: Fig. 1f.

Referring to Figs; 1=, 2;' 5 and?y 6,-"i'fhef` brake. meohanism`includes an upper brakebarliif fixed? to;` the; sides of4 the housingv`I2 and; a movable brake bar or member 14. A guide pin 15 is fixed toeach end of the bar 14 and works in a bushed guide bore 16 in the bar13. A spring 11 mounted in each end of bar 13 acts to normally urge thebar 14 outwardly or to a release position. Pins 13 are also looselymounted in guide bores 19 in the bar 13 and engage at one end with thebar 14. At their other ends, the pins, 18 operatively* engage a manuallyoperable osciliatoryshaft] 81% eccentrically mounted at its ends' in thehousing Il'l and carrying an operating handle 8| whereby the brake bar'M may be moved away from the bar 13 for web threading purposes. The bar14 is also engaged at its ends by screws 32 adjustably mounted i-ntheendsof? spaced resilient crank arms 83 which are carried by anoscillatory shaft 3d, see Fig. 6.

The'shaft 84 carries spaced crank arms 35 in which the shaft 86 of' thefeed roller 31 are jou'rnalledf.- Shaftl 86.- carries a gear 81: meshingwith a gear 88 on the continuously rotated shadt 3 8y for thef feed:roller 3ii-I which. is mounted bearings.` the housing; I-2f; see Fig.v4.. The shaft 84 also carries a crank` arml 8e which, as shown invl Fig.6,. istv engaged.-v by oppositely disposed` loading.T devices. Bheloading Y device whichl determines; the grippingv pressureA between the:rolls: and 36;, includes theplunger 59a, spring? casingY 6}I,. and.loadY adjusting screw 32' preyiouslyV referred to.. By adjusting thescrew 62 relative to; the spring 60, greater or less pressure is;`applied". to thefarm 88: through the.1 plunger'. 59a to cause a:ceunterclockwise swinging` movement ot--theshaft 8.4:,to swing theroll'3z1 towardathe r'o'llr 33` and at the saine time swinging; the arma8,3 downwardly to-.release-thebrake bar: 1.4; from braking engagementwith. the weba The. loading deviceV which actsfony the arm 895150oppose?l the spring loaded# plunger 59o` and cause: a1. release` of" theroilil 31: tromv feeding enfga'gement with ther webr comprises' a.hydrauln cally operatedv piston, 3ER slidablymounted in an operating',cylinder. St and` yieldingly urged, outwardlyA by: the` ligt-itApressure off a. spring 92, see. Fig; 6i A: dui tizn'isferlL pipe 93connectsthe cylinder the cham-:ber 94 orv a` pum-pcylinder 95imwl'rielr; a. pump plunger 93- isV slidably` mounted, saisir` plunger'being normally urged outwardly by: a' spring 9 erposed between itandithea pun'incylinder; which hasV a port 98 connected by a pipe 99 with areservoir IUI! for hydraulic uid, see Figs:` 6` and 7.1 Thecontinuous-1yr rotatedsidrive'fi shaft lcarries a cam IBI which has ahigh portion, I83e:itendingfalong oneethirdf. orbita periphery andA alow portion extending along the other two-thirds o'iii'ts` pe-y riphery-Tfre cam, IfIlfI.E bears` against; al, roller |03 on the free end of aileven tappeti. F04 piv ot'alfly` mounteiiiatf mit and4 engaging theouter end-of the plunger 96, thespringSJ?!acting;V to maintainengagement of; the tappet. with the cam; Tha inlet.. 'andfreturn ofviiuid= from and to the pipe 99 and reservoir I0!) is contr-olf led bythe pump! plirrgen 9.8i which depending upon its position inthecyliirler- II-?eitlier cuts-v oir orl exposes ther. parte' 9B;- EOLrguidingf'the plunger' 98 and. increasing? its seaiing contact with thebore; ci' the. cylinder' the. samei's shown as: prcvidedi w-ithiVaitubul'arextension'. m6 having a port I01ftliereiirc'ooperateswiththeiport': 98. Thi'sfextension Iil'couldibe' omitted without changingthe co'ntroilingi effect.' off the irl-ungen y mth theahorreconstruct/foinY during two'etliirdis of a revolution of the driveshaft `22 while `the low portion of the cam IOI is passing the roller|03, the pump plunger 96 is retracted as `shown in Fig. 7 and the port98 isy alinedwith `the port |01, and under these conditions theoperating piston 90 l isiretracted t and the springipressed plunger 59ais acting to lmove the roller 31 upwardly to produce a nippingengagement of the web between therolls 36 and 31 and the feed of saidweb to the press, the brake bar 14` being then released. Duringtherother one-third of the -revolution of this shaft 22, while theplaten I5 is making its cut, the highpart |02 of the cam IOI forces theplunger 96 downwardly cutting off the port 98 and puttingthe fluid inthe chamber 94, pipe 93, and cylinder 9| under pressure which acting onthe piston` 90 moves it outwardly and swings the crank arm 89 and shaft84 counterclockwise overcoming the pressure `of the `loaded plunger 59aand swinging the roll 31 out of gripping `or feeding engagement with`the web and simultaneously acting through theresilient or spring arms`83 `and the screwsw82 to put pressure on `the brake bar 14 and clampthe web between said bar andthe fixed bar 13. Thus through the controlof the hydraulic system by the cam IOI, the feedrolls'36 and 31 are.intermittently engaged with theweb `to advance the same during the idleperiod of thelpress and the brake is engaged with the web during theblanking period of the press. i i

, While the feed rolls 36 `and 31 are engaging the web, if theIJthickness of this web varies, as it `frequently does, on an increase`of thickness of the web acting through the roll 31, crank `89 and shaft84 on the arms 85 `tending to swing the same counterclockwise, thepiston 90 moves outwardly under the action of its spring 92, and morefluid is free to enter the hydraulicsystem through the port 98, so thatno matter` what thickness the web is at the time the roller |03 passesfrom the low part` to the high part of the cam, the piston 90 will be incontact with the crank arm` 89 andbe instantly available to shift theroll 31 to a `release `position relative to the web. This action wouldnot be possible were the arm 89 moved directly by the cam |01. i

In order to vary the length of "feed of theweb to accommodatevaryingilengths of cartons, the speed of the feed rolls-are variedrelative to'the speed of the shaft 22 through a drive between the roll36 and the shaft 22.` As shown in Figs. 1 to 4, the shaft 38 of the roll36 carries a sprocket |08 connected by a chain |09 `with a` sprocket Hon a lay shaft m which carries algear I l2 meshing with a gear H3 on ashaft II4 which carries a change gear/,I'I meshingwith an idler gear `II6 that also mesheswith a changegear ||1 on the drive shaft 22; The studIshaftA for the idlergear ||1 is carried on the free' ends of arms II8and I I9 at their point of connection with each other, the other ends ofsaid arms being pivotally connected at |20 and |21, respectively, withthe frame of the machine, the arm ||8 being slotted at |22 to permitangular adjustment of these arms relative to each other, so that theidler gear ||1 may be meshed with different ratios of change gears IIand ||1. By substituting different ratios of change gears II5 and I I1the speed of the roll 36 and consequently the roll 33 may be varied tovary the amount of web fed to the press during each rotation of theshaft 22. The gears I5 and I I1 are quick change gears. If desired, thegears ||2 and ||3 may be also change gears of definite fixed ratios.

`Because of the ability to' change the speed :of the feed withoutchanging `the speed of the drive shaft 22, this pressmay bedirectconnected to any suitable rotary printing` press, `and the platecylinder of this press be driven from the shaft 22, andfor this purpose,as shown in Figs. 2 and 3, the shaft 22 carriesa spiral gear I23Jmeshingin one to one ratio with a spiral gear |24 mounted i Referring to Figs.l and 2, ,a feed lscrew `|30 is` journalled inthe housing |2 `andcarries a hand crank I3| `and has `side web guide plates I 32 `mountedthereon, movable toward. or away from each other to adjustforthe varyingwidths of web, this guide being f disposed between the brake and thefeed rolls 36 and 31.

To summarize the operation of the apparatus, theweb as it enters the`press isguided in its desired` lateral position by adjustment of theguide members 30, andfwitl'l` the rollers 33, 34 and 35 in opened orspaced condition due to the operation of the air piston 65, vthe webisthreaded around and between these cylinders and then through theloopingspace between the aprons 61 and 68, then between the brake members 13and 14 between the guide plates |32 and between the feed rollers 36 and31, then in an open position due to the operation of the` air piston65a, and then through the space between the `platens I4 and I5, suicientstock of theweb having been left in this threading operationV to form aloop such" as the Qloop shown in dotted lines in Fig. 1. The motor 28 isthen` started whichputsthe shaft 22 `an`d`the`va`rious drive connectionsassociated therewith `in motion`,`thus` positively driving thedraw orfeed rolls 33, 34 and 35 and the feed rolls 36 and 31,i`t being assumedthat at this point thesefeed rolls are driving and carryingtheweblthrough the press land takingupthe slackformedby the loopl tobring` the vweb to its upper `position shown in Fig. 1, at which timethefeedroll 31 is movedout of feeding relation wi-th the roll 36," thebrake bar 14 `is moved into operative relation" with the bar 13 `to gripthe web, and the `platen I5 is making its cutting and cr' `easing``stroke. While",the web is being ,held byftl'ie brake, the rolls 33.34and 35 are operating"`to` supply more-"ofthe web to form.` al new loopbetween the aprons61 and 68, and as soon as the press has retracted theplaten I5 suflciently to let the web pass through, the cam IOI runningon its low side acts on the actuating mechanism previously described topermit the spring pressed plunger 51a to shift the feed roll 31 intodriving relation with the web and the roll 36 and to release the brakebar 13 for another feed of the webl in between and through the platensof the press While taking up the loop. This cycle repeats itself, thefeed rolls each time feeding so much of the web ashconstitutes thelength of any one blank to be formed, which blank may or may not haveprinted indicia thereon depending onprevious treatment of the web.

I 'desire .it tovl be.' understood that Athis invention is' not to belimited" to; any particular form ,or aiirangementof: parts. exceptin.so1 far as suchv limitations are. included: in the claims'.

WhatfI claimasimy'invention is:

1;. The combination withv ai creasing and blank iormingr presa'. of;mechanism for feedingV a-f pre.- detemiinedv length onpaper` 4web to`said press corilprising,y aset .ofcontinuously activeitfeb feed-.- ingmetering` rolls andt a-f set of intermittently active iii/'elofeeding.rolls, means for.` driving said inteimitteiitiy attiiferoiis-.atamener.- speedthan said continuously' active-rolls', means for renderinglsaid?" intermittently 'active feed rolls Vinactive while" al loop is`-bdiit'upjin the Webbetween said: sets of'reils; means forpositiveiyfdrivingthe reus of eaclL set at predetermined speeds; anupper apron anda lower apron 'in which the loop is biiiitfupand by whichits upio'eraiid lower movements are controlled, said continuously activemetering rolls having their bite positioned to normally direct the webLdownwardly and toward th bottom portion o fffsaid lower apron, saidlower ap ny extending upwardlyt'o a' positionadjacent the" upper apronjat; the end or thev loop which is adjacent said vinteri'nitt'entlyactivej web feeding rolls, the upper` 2113110.11.. beingdownwardly inclined intermediate its' ,ends and .engaging the; uppersurface oi thje vg/ eb'btjweensaijdj setsjoil rolls and disposed' belowa straightriineextending between the nips'ofbothsets of' rolls andcreating a frictiorlaldi'ag. on' theweb between said Sets of rolls whenthe loop is taken up'.

2; The corribiiiationwitha creasing and blank forming p1jess`, ofmechanism foneeding a predetermined lerigth of paper web `to said presscomprising' a set of web .feeding fils; .means for continuouslydriv n'g.said rolls' vt-l'iileV engagedv with l a :dov support' f 'oroileoflsaidrolls, d cainmeans acting for a' predetermined periodgduringarevolution of said rolls., a hvdrau'1'ic-system.,feminisme a Dump hav.-ing a plunger operatively coiinectdto .said cam;y a .conduitfora Sourceof: hydraulic. 'u'ild connectdf'tothe. pump and having. aport controlledby Said. plunger, an. operating .pistonan'd' .its cylinder in;circuitVwith said. pump and 4operable by iiuidfdispia'ced by saldi plunger' and.operatively oniettedltc saidsupportto more the same dur.- ing thepredetermined,perioddetermined by said carni means so as to rendertherolls inactive vto feedv the web during. period, thje cylinder for saidop'4 ating piston being connected with said source when' said cainkifsinactivety The structure as` denedin; claim 2 wherein the operatinf,7Npisteitworksini a cylinder having ariopen'pipe'.connection' with thepump cylin-- der which". is in.' communication withv said source whensaid port is open.

4; TheV combination'. with: .a creasing: and .blank forming.Dress,` ofmechanism for' controlling the feediof a web; of carton. stockiinpredetermined lengths to1 .said p1:e`ss.co`mprising a brake meansincluding. a incivablebrake memberxand a feed meansgcomprisingla pair.of rolls, one .of which ismovabletoward-and away from the ,other roll,means for, ccmtinuouslyl driving. said rollswhile .engaging theWeb-,..arr,.osci1latory shaft,. crank means., directly; connectingv thelmovable-L member 'of tl'ie` brake.: and; the. movable .feed roll withsaid shaft, an;v operating` cranltconnected; with said shaft,. anidfadjustable spring.v .loading means norv maily .acting on said; operatingcran-k toi turn said. sh'aitv to. bring. saidil vmovable .roll into webfeedingrelation with its companion roll ata predetermined; pressure, andpress-,timed means acting... on ...said operating: crank. during. a.denite predetermined period; during` the .revolution of saldi feedrolls` to open said. rolls and apply said brkel..

5. The; combination; with acreasing.; and-.blank forming; press, ofmechanism .for feeding apren determined' length; of paper ,web .tosaldi. press comprising.. a setiof webfeedin'grolis, means forcontinuously driviniasaid rolls. while engaged'withl the' web', amovablesupport for one ,ofi sadrollsg means for miovingsaid support to.brings'ai'd rolls into;v feeding relatiorrwith. the: web', rotatablepress-timedy carri'x meansf. acting for. a'. predette-- mined period,and hydraulically operated means controlled .by saidtcan means andincluding a piston s`hift`alo1e with: said support anda constant stroke'pump to: compensate for varying. thicknesse'sof the web for nioving saidsupport a prdeterminedv distance regardless of" varyng thciinesses oftjiie web peni-g iedbetween saierioiis to'v ieiiiiei;` said tousinactive to ieedthe web for the predetermined period Adetermined by saidcani" means.

JOHN R. BAUMGARTNER,

Referenties citeiriii the nieof this patent

